Is there a way to decrease the voltage on the Nucleo board WB55?

[Member]

I am working on the Programmable Voltage Detector (PVD) and was wondering if I can decrease the voltage instead of the default 3 volts it is outputting right now. I would like to decrease in different intervals to test the PVD.

[Remi QUINTIN]

The WB device requires a VDD operating voltage supply between 1.71 V and 3.6 V. It is up to you to provide the power voltage you want to test your application.

Note that you have to set the BOR level to 0 to let the WB working properly (Higher voltage than 1.67V). Under this threshold, the WB is reset.

On the Nucleo board, there is nothing obvious to do to enable a variable voltage to power the WB device. Moreover the power is not powering the WB only but also the STLINK chip.